Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'f547c8f906a47f9c2510d1585242ed1c4bed61454beb64a809429bb752e362fe' 
  AND token = 'M5BwlKjN/WBVIAr8/XV9FD8VcQ2Qbk4MOpgI6QdElAY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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