Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '70e4f951c1221c07742b8ae84879dbf7005047329922a6311884986667673642' 
  AND token = '2qgTI+s7a0elvZPi/0EeQFGvvMxfciWysGsqdzx2xQ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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