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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '1ea940870df1f0b821dd7ff36ae528515f30c418a528864db240812916914056' 
  AND token = 'vcHd1V/GwAdgtC2f0AkYjHz/No08k8OyXDWQ1cY80Us=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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