Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '825bc253211cac72163ea48eded051cb9bf58bab3e1c63b98b79551fbb5b6441' 
  AND token = 'hXrOnuFtf52AIPzKEOCQNh+9lwWRydqMHCoOeFDRccs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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