Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c7d4580c10d37ab84eea679555d9e409396355b7e07eee5d734b6de342f2e9fb' 
  AND token = 'dTX8YPWoCbxVAuJ+UtcG9/6fWXllESKv8LB0OUoZIaw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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