Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4b2a631b6c347b280cc9d7c294d36c297064c7ed0ce775188423810c722e553d' 
  AND token = '0XnBXiJhQZL3/6+xYbJCRbtbul3Mq1jG/NTJ9MiSXG4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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