Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e01101f6cbef00713ebf36ab21d30850e656872c63f97699199c83c29087e40' 
  AND token = 'HgLH1Uwzg3bbeEjK/YvZ7/0w3clMXkUAKy4gBXf6ppY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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