Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '76cf0dc6a0568c5cb1775dec2a8dbd428766f03137716ccf975267cde150466f' 
  AND token = 'l3ECa3MFP4umMjbLPePuVC7kCb8LCaVWSlBknsKNnlA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}