Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '77b80b049172824bcf9822c6aad89c0295f014667413113894967c50cdeac6d0' 
  AND token = 'ej3ajkrOPmFO9WAeXmptcAYDm7K0mb5Mkg/AJWNceXI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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