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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'bfd056447d926df914601077a30c49de3bafa2c8e8f43d3a12909314c7d543da' 
  AND token = 'k39k8hCVOhPSrLHEDHlWneVEG8TAaBNHAOF6z6EN4hA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}