Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22e34c54e81f0e5aca99cac5734e59ba727088ee62dedab89de7ab2840322259' 
  AND token = 'rZYQvSWU8+GjyCdtOI+IUL0nqT/QBsOQsNIPgQMfqgQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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