Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67ecd410312b3cc61e80a4441529bcc131d5e2998938420009e74494124195e2' 
  AND token = 'QW70b8OR5H2chQyormuLQZflOr+Ql4DyfS/UB9PkWB8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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