Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f3b7030fdd98a19c6ecdc972d8b1004eb43785e6b34f7bc5a93b677352cc5874' 
  AND token = 'dEN4Lyvdx8vODcFZ5EfhBJVZrrUpxIZIY/2/OtO5bHA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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