Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd267bb20e929e721e61f506fef62de62c589319f30044348e0a6c6067e7f80e3' 
  AND token = 'lQZkuLWliUxFOhk98+je+8KMKnpKPJKxXhwR5Q1M8U4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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