Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7253fa3086abf84c2c69377862deb0864179f7e5efe53642adf696e618fc36d6' 
  AND token = 'azEHnOw1oPIP2RJI/cAszIjno7MEbNDiPw0lAbfzpKc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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