Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '323907f21f0660f3e3a2523b7fe8dedc20fe758c02a14232f6c3d69a654fd8fe' 
  AND token = 'b97TrGZC2+s5KAfNTOGCcGRjjmVUjO+l8WWhB6WY3KA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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