Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c24c244eb7b3feaa205a409d73ca7a8a3e0c4097d717f62011b4ca430bf47be6' 
  AND token = '27Nlxxm5d92OIieyV1E4NVHwn5qX/uUE3kTGott1g0Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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