Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65b43c6e18b3f0fb8b0e39b43896a8624c522cd239fc0ceeb5f1a56bb3638ddb' 
  AND token = 'lKn6bwROFMAAs0xwglFTkxcj2O5CxggxVkQHse2zyh4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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