Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3deaf43706f1d2215e1fdcb6aa8f53c3866379a409a31a3967565c25eea7d216' 
  AND token = '0b12va9Hh3Mo4o3/zGwIkO5eWy05/TbfGi8nZbZt/ME=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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