Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7df229160e252abc0e31055c8d23510d25d00def9641544710a775b5381368f1' 
  AND token = 'Kr65aGKGLr19xIeN7iA44HRFuSPtHAy+y3iZL/IpKLw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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