Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73cb417f40f03a98ca2439c880a74f3c58b2a0ad290b56094471f1d283fb4e2e' 
  AND token = 'nOOBQjsgpLf7lp54lXUDehshMEuGtgMuDXW48Q4lZHs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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