Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e00c54de5bfc2fa551961157a3cd5b97f608ed67ce647706c4ae6a25179de47' 
  AND token = '1xLkP45nzjcUjxn2FwnKmhEeeU67wJaYQz+p0C1mmhE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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