Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'faffe34341b11dfb89d1d1db4693df302c1a086a3c115abd613331f9629fa822' 
  AND token = 'KeUfpcSPOIJB73VBG+I1oY0SKCE/xe0Y+WFQepK9uuE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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