Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd9cf5748857c2fe7a24b6858db784f1c7e7d06ecda59ccbf0f481f040116dcd5' 
  AND token = 'TZqkXH1If58ZnZcxSANJ/OxsLbfMLsiQyeswJuBDKYY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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