Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c7eebc0d5a8b58c512fcd26d19f5a4f0a062712c866a581b736f0407bf82c3b' 
  AND token = 'p+f2sE9Pcb9POsTUuQY3FYIRgPdO1lbUb+gwP0gUbP4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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