Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '1fcad943303c9a96f22b3b2ee898fb81835b2358123e38b2baadf3d6fa94926a' 
  AND token = 'O7sE2WL+fA3Yir8IF2rnMkhF4iila/2nvjkPOXfheMU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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