Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abcdaac76902a5ecdc64db156baeb6cfd2c5df2e98f5245c8b25840c0c5e89a9' 
  AND token = 'x+q7VQ65fE+KVL8Znldd7Kj0fvKtaCHK60EqPoJzRrQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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