Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a53bc1b326bde53cbdb65a574a2d82cd9b251b77048b1ef52723a827b4b06064' 
  AND token = 'oRZI5codW/IRRd0pt/hbkY3EFHGseebahr8dUHcJsFk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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