Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58908b81002d5cd7db1aa6cf61b30e2bb030eb1813a8cde447512803c6b419d5' 
  AND token = 'JBS4z8POFKwoGALrkUnZbyCNExnQcTbbgf/UmGewW0Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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