Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1340baceb894d9d4792fbf656b6e7ba6eaa9226f37287728a9fc3020db46babd' 
  AND token = 'XwkpiER0dx33kKtZGCoUNhfYHaLpoqD76zfj3KfJ2Qw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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