Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6a06697c1ee2b626b9063d89a42249197f08b264ecc1067660d6cc49be95b736' 
  AND token = '43a/eqUV5k0qHBJdaIwW0lCu8Jz5TKgIiw2PLVSox5Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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