Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '330d084780ce66d4dd037c6434edc2bfb5481469206db267a47131181ebcacfd' 
  AND token = 'nqSPeqFeuN6a3CkuL3PwlNX52qnjx73SDZl4qBmXNOw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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