Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '58655d480f1029a4213a3c308fd9b44f6323b32b10078427160ded1fc1eac773' 
  AND token = 'tmof5oM5KnMW6LheRWpmdgKFIW76qo/obxAkHPUKg1w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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