Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3854dbf00753c7305edaa8fd584cadc7cdd5f61846f1cc020da665104dd70966' 
  AND token = 'Qv2nnP8S1rUCO9nC+QmvsVON5PeQgCLxOrys31A6kN8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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