SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d7f7ed8ab423fa9a9658835a121475f9908535673a216c2658ebb8d34b25afd' 
  AND token = 'd2pAMHo7knxsujOBSbNBM/JjZt7EYvG+tF5odljK2L8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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