Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '631fe0d5d95bce3970c714ba8dcdea4e9789b9a3ea6e027048b0e059079083a0' 
  AND token = 'BGNPU3FQyb0Pe6nasvhYILgUAJbSJemc+GgN3X+L/2k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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