Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a7027b593fd5bad7437f11be56dad1fcae303f35380028355684f3ca4c9912af' 
  AND token = 'ffE4gLf0b9t4f4bZ0ZC/qZT7UPrDMbvcNZic9A6hJc4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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