Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05d8eaafe7495b492d3917cc0afbf2b936cd5e57abbd8eb8dabac0e3436da13b' 
  AND token = 'HiDiolYoAeS7R0iZ/OlYypQhUDVUqLnCywPRP5ZZp6g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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