Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '48e44054b3d25e58eec73ba1958e7ef53bc74ccbb50b92920ff64d52e802ba16' 
  AND token = '6fbXBtGMTHfDBFEFz5Isudss1iMnLcGtjZ/8amoHvlk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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