Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4c72d8b6e6bf3994196bcec65255b058003946e2c70c6350194ca0e5d9ab8676' 
  AND token = 'a0I7wFJRRUErLN3xEyZshW8QnJPTosAHO/bOIPUiP34=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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