Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06fada1c6c44089c9183f156e4a54d00cc5c68040effc63ed664ea2d30a75b2a' 
  AND token = 'SlU1G5dGyDbCzIuq+QUP0ieKTGJq5dTJutxvo13U8uk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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