Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5946127b2d5dd6d1eac101bf76494b26b206a65be4ad4663262ee299ba429366' 
  AND token = '/J2AFn2reT4GzEAT/wI7GoRX4FvsyLRGf01q9oqKbcQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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