Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4bb268076f62bbeb58e1792a73061a597ec2c67556fd01276590ecf49286855a' 
  AND token = '4je17o+foOV/N2W4nZUlGgU32YX1AD7diXHCqgwc8AU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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