Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e25666d93aaccd9c033fd776da1a6a0e844948626b230b4b329d2e354570bc45' 
  AND token = '0GLqvJvNHLx7uNO9ilFdxiRshDAIRUHDnMpcCcqJY8Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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