Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f2c0d7b4659bfdb7f7143e70969711a109fabe6ed9a92143fc1de32d7d3262a' 
  AND token = 'IFiP4daNTlG0YE0Re3/tIjyJWYKOOpIwqPMzBy0aF80=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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