Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9b59f92931fef3e68d4e9d6f37c46c19bf6c11ae27031d3a30155768e93feeea' 
  AND token = 'GVaApqCPpntjxjbYFfaWMz+q6SI/ZyesYkt/nV1HFY0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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