Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e71ed5efbfb11c6b5c15d767a8fc72a71cbd3c5dae6654224239297375a635db' 
  AND token = 'ZK4Uh3J30N2A7kHkn9baNjp1BSVnsqVK75WSO866WUw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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