Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '003592dd54b8a1d5679bee10377fc4ed20d07f6fec271fd32e671a75202cda7b' 
  AND token = '85zZL/t+EGlvCAG6REJetxMkSuwLu2e0oGrqzGrKclE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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