Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd024cb7de081f907fdd7e93a2b5391a81b090bf989b33ba51e881b658d0772ed' 
  AND token = 'x/GofnzI7QtFQwwlPbnW0ycy3Xrzb+jmnRjIWbBKTM0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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