Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'cd7736314e0777358f0f03d4d61e6b15310400f346cc704ab8b234dd03fab28d' 
  AND token = '9tVN4Jb53LD/gidVXOuV1Lgak6r7k1d08lYBdsLa/10=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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