Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b1df010671fb03efa3b5120aab2ddaa0f984d58b320ba6ea17f08b88a5fb6905' 
  AND token = 'tFgqdVJUdAYYUF18bHbuICGicEHNVLZLp0no6QAUkC4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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