Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ef091b6b15bf7a5d97f0ad6105a55f4d98672dc9540886363e34b01249d124c5' 
  AND token = 's0z0Thq93YLdB1ajQcjEt099IQOdCpgNAX1DPlciM0Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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