Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f0560e45f686fe8f85c5a3d6c202e8536bc25fde6e7569d190cfd631a4eb3766' 
  AND token = 'T6k7ecdagpbe1PvwcJI8K4Ddow+axQrCC4sgihwpyTU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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