Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd4fce731e1df2c5219f0eafb90716846cd74ab8b7a521396cc4951580f977254' 
  AND token = 'K78i0xZJhUD4BrDEOHzCmb/RmJ31s8AkW7Cm8lrxdFY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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