Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb4d2b8936149a2cbb5b396a7d955bfa883dff2959a85ef4f6adacfc84f6cba0' 
  AND token = 'vb3eKhuNCOhhrWPP9UpCBi3f470poCOcOAA2iuxP3Os=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00085

JSON explain

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