SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8930d7d49c137bb741c221e927834bdb03cd535ecf25b8aa6b2522bae38a6235' 
  AND token = 'KoCukeAWP5TnBRqNFPiXYI4Y/gJJK0+vSEwawlS9X5M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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