Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'faf8695eadb2043fce0b2506715640f0b1fdb8188b96fbcf893557d5147852f2' 
  AND token = 'ZxK2Ryzs+f7XuFKhWlndoL9n7t+CCnG/XPmohzzbRkc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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