Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'be451eb7f350416f96eed08b213506ae20796f99aeb89a3ab962a8eb2442bcf4' 
  AND token = 'jimKku34XQdtpNRvxmAKJoNeCwbNwM6qMzPg5ko5q+k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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