Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59c120ee587140e44da391bce0cafb8a97139d74fe2b8c3991080984c6370b0a' 
  AND token = 'lbEwh3NwdYG4HQ7gIiDZhYR4lHVvH7kmBw6IFA8tiao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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