Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd168b8a114b5cb205626a7afe867e444346ea807a0b7f4b45c99f02b8044e60' 
  AND token = 'VRb+xzWIL9Nfu3RXX0aiNno8ISlCyGwJp6iEmiwAPHA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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