Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73c1ae3807144ade5248152d2e84cf2d3718319c2af786bc743c1d1b6d5a3a88' 
  AND token = 'gOwR7HrM1QoA1qGtt4ATFEC1xg6Q9pNuIgth5IrIRdY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}