Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63b446f0709dab6b0c07db910bc10f0d6ed4ba90dd30ac0e727d7b6ab3ca0208' 
  AND token = 'KNVYsPevLG0UdPOg1eb3EZisV9H2sLYymcy2e4vFcqk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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