Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b3efaad33d6ecdb47abe26f9f2fdc444300da375fcb97b383dc1e9fe6705ea3' 
  AND token = 'ZeFsL+GZw7N+LPsZ5ecG/O+JfC4udenIlsExKqIYhRU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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