Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '454fef7e4d8bba9ba9edf7bc6267e2199a761ac5f038beba406fe735fa993405' 
  AND token = 'C3TwwQvIwZkbaMbG2/Apal/kUn9XvGd8zZqQN16BRSI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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