Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f0c416db727a7c7447c28b6ca7276edf034b2f36f3927059cbd501065cc51428' 
  AND token = 'EJ1th4RI+JtUe4eN6mqP1+6m/UK+JZtfBRliB1ca0Z0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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