Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '384fe9dbe30f131ac97dc68c622bbe742de47e8108c3671cbb0423db6bbe0e29' 
  AND token = 'VJMSiSP0b7TVH9sPzA6kFWinrigDRLp3a/0ZWONzB/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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