Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b3608ecc0556b9c32ba6990073fa9b9619f2cd1f5a242d4d893f63c6e0712ec' 
  AND token = 'oSOhjFQGrGKOAao+IJwaC1Obqm8gPe90e5VKfk1RlVI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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