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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e2996e97149e7992845e4aa56c25de01e100ae160c7c82cb6c2fdc35e78ccba' 
  AND token = 'viipal/z9vHbLOJ82vpPe4+UUkFoG/rK7j08gZGQVr8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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