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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '5e0ec42d8c4e2de3d891d6fb5ec8ec0a4bea23bc15383f5224ce8cb47d4c37bc' 
  AND token = 'yo5oPnSkjywMA93PGSgsGazXWLduQl1CNau1NXqHUog=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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