Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a7e23bfb63652e14abeadd79ab430709567619913eb283d002c1fd162f53ef9b' 
  AND token = 'mfyhqC/3E09sspkMTdRoMGHeK8VPgTdazXJXNJ2DyuA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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