Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64e651264ad0466afe223391e90562b29cf796a814620da94e91fe85311d0954' 
  AND token = 'foAeW2Kb1ThNo6uhmapNVYyvwxM7XVt+wgQzXU4t4jo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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