Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8882a2c9790f1a4cd04b09cd0ae749f4025a010da62678312d3b968baa62835e' 
  AND token = 'FPSG7uOszDeHqJaN02E/vHgNyL+9j5b2LxL466hyUZc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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