Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c80d17c523ace5aa6823cb5db418a316753fbec7682a320a14e394194261b21d' 
  AND token = 'QD5Y0I10s8yQwptKulxxQYQFGRe6EvJPmXYQtJfLb8A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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