Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06d55da140b4363d86ee23ecaa150b18b513c5646f1826c50bfb93777d2c7ab6' 
  AND token = 'mdvAgGMxddIdVhPoRoxoZSq2KEdiKiImaS7SNc7NeDU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}